Insert Acetal N-Valved Back Catalog number: 1002734873 Manufacturer: YOUNG LIN INSTRUMENT Availability: Currently unavailable Price on request - + Recommended 0840.712 Syringe valve including valve bush Price on request 419 NON-RETURN-VALVE, O 12-13-15mm Price on request 7010-071 Tefzel rotor seal for 7010 Price on request